Incidently if anyone is thinking about playing with displacement in other apps; in apps like Cinema, Lightwave etc the detail you can acheive in the displacement is dependent on mesh density. That cube Audity posted was probably heavily sub divided to get that nice smooth/crisp displacement. In DazStudio (3Delight) or Poser 5 etc microploygon displacement is used allowing much finer detail regardless of mesh density. This allows you to use much lower res models. - Baz